Swiff.Uploader = new Class({
  Extends: Swiff,
  Implements: Events,
  options: {
    path: 'Swiff.Uploader.swf',
    target: null,
    zIndex: 9999,
    height: 30,
    width: 100,
    callBacks: null,
    params: {
      wMode: 'opaque',
      menu: 'false',
      allowScriptAccess: 'always'
    },
    
    typeFilter: null,
    multiple: true,
    queued: true,
    verbose: false,

    url: null,
    method: null,
    data: null,
    mergeData: true,
    fieldName: null,

    fileSizeMin: 1,
    fileSizeMax: null,
    allowDuplicates: false,
    timeLimit: (Browser.Platform.linux) ? 0 : 30,

    buttonImage: null,
    policyFile: null,

    fileListMax: 0,
    fileListSizeMax: 0,

    instantStart: false,
    appendCookieData: false,

    fileClass: null
    /*
    onLoad: $empty,
    onFail: $empty,
    onStart: $empty,
    onQueue: $empty,
    onComplete: $empty,
    onBrowse: $empty,
    onDisabledBrowse: $empty,
    onCancel: $empty,
    onSelect: $empty,
    onSelectSuccess: $empty,
    onSelectFail: $empty,

    onButtonEnter: $empty,
    onButtonLeave: $empty,
    onButtonDown: $empty,
    onButtonDisable: $empty,

    onFileStart: $empty,
    onFileStop: $empty,
    onFileRequeue: $empty,
    onFileOpen: $empty,
    onFileProgress: $empty,
    onFileComplete: $empty,
    onFileRemove: $empty,

    onBeforeStart: $empty,
    onBeforeStop: $empty,
    onBeforeRemove: $empty
    */
  },
  initialize: function(options) {
    this.addEvent('load', this.initializeSwiff, true)
      .addEvent('select', this.processFiles, true)
      .addEvent('complete', this.update, true)
      .addEvent('fileRemove', function(file) {
        this.fileList.erase(file);
      }.bind(this), true);
    this.setOptions(options);
    if (this.options.callBacks) {
      Hash.each(this.options.callBacks, function(fn, name) {
        his.addEvent(name, fn);
      }, this);
    }
    this.options.callBacks = {
      fireCallback: this.fireCallback.bind(this)
    };
    var path = this.options.path;
    if (!path.contains('?')) path += '?noCache=' + $time();
    this.options.container = this.box = new Element('span', {'class': 'swiff-uploader-box'}).inject($(this.options.container) || document.body);
    this.target = $(this.options.target);
    if (this.target) {
      var scroll = window.getScroll();
      this.box.setStyles({
        position: 'absolute',
        visibility: 'visible',
        zIndex: this.options.zIndex,
        overflow: 'hidden',
        height: 1, width: 1,
        top: scroll.y, left: scroll.x
      });
      this.parent(path, {
        params: {
          wMode: 'transparent'
        },
        height: '100%',
        width: '100%'
      });
      this.target.addEvent('mouseenter', function(){this.box.setStyle('visibility','visible');this.reposition()}.bind(this));
      this.addEvents({
        buttonEnter: this.targetRelay.bind(this, ['mouseenter']),
        buttonLeave: this.targetRelay.bind(this, ['mouseleave']),
        buttonDown: this.targetRelay.bind(this, ['mousedown']),
        buttonDisable: this.targetRelay.bind(this, ['disable'])
      });
      this.reposition();
      window.addEvent('resize', this.reposition.bind(this, []));
    } else {
      this.parent(path);
    }
    this.inject(this.box);
    this.fileList = [];
    this.size = this.uploading = this.bytesLoaded = this.percentLoaded = 0;
    if (Browser.Plugins.Flash.version < 9) {
      this.fireEvent('fail', ['flash']);
    } else {
      this.verifyLoad.delay(1000, this);
    }
  },
  verifyLoad: function() {
    if (this.loaded) return;
    if (!this.object.parentNode) {
      this.fireEvent('fail', ['disabled']);
    } else if (this.object.style.display == 'none') {
      this.fireEvent('fail', ['hidden']);
    } else if (!this.object.offsetWidth) {
      this.fireEvent('fail', ['empty']);
    }
  },
  fireCallback: function(name, args) {
    if (name.substr(0, 4) == 'file') {
      if (args.length > 1) this.update(args[1]);
      var data = args[0];
      var file = this.findFile(data.id);
      this.fireEvent(name, file || data, 5);
      if (file) {
        var fire = name.replace(/^file([A-Z])/, function($0, $1) {
          return $1.toLowerCase();
        });
        file.update(data).fireEvent(fire, [data], 10);
      }
    } else {
      this.fireEvent(name, args, 5);
    }
  },
  update: function(data) {
    $extend(this, data);
    this.fireEvent('queue', [this], 10);
    return this;
  },
  findFile: function(id) {
    for (var i = 0; i < this.fileList.length; i++) {
      if (this.fileList[i].id == id) return this.fileList[i];
    }
    return null;
  },
  initializeSwiff: function() {
    this.remote('initialize', {
      width: this.options.width,
      height: this.options.height,
      typeFilter: this.options.typeFilter,
      multiple: this.options.multiple,
      queued: this.options.queued,
      url: this.options.url,
      method: this.options.method,
      data: this.options.data,
      mergeData: this.options.mergeData,
      fieldName: this.options.fieldName,
      verbose: this.options.verbose,
      fileSizeMin: this.options.fileSizeMin,
      fileSizeMax: this.options.fileSizeMax,
      allowDuplicates: this.options.allowDuplicates,
      timeLimit: this.options.timeLimit,
      buttonImage: this.options.buttonImage,
      policyFile: this.options.policyFile
    });
    this.loaded = true;
    this.appendCookieData();
  },
  targetRelay: function(name) {
    if (this.target) this.target.fireEvent(name);
  },

    reposition: function(coords) {
        coords = coords || (this.target && this.target.isDisplay())
            ? this.target.getCoordinates(this.box.getOffsetParent())
            : {top: window.getScrollTop(), left: 0, width: 1, height: 1, visibility: 'hidden'}
        try{
            this.box.setStyles(coords);
        }catch(e){
            //alert(this.box.setStyles);//setStyles()方法缺失导致弹出错误，但是不影响其它代码
        }
        this.fireEvent('reposition', [coords, this.box, this.target]);
    },

    setOptions: function(options) {
        if (options) {
            if (options.url) options.url = Swiff.Uploader.qualifyPath(options.url);
            if (options.buttonImage) options.buttonImage = Swiff.Uploader.qualifyPath(options.buttonImage);
            this.parent(options);
            if (this.loaded) this.remote('setOptions', options);
        }
        return this;
    },

    setEnabled: function(status) {
        this.remote('setEnabled', status);
    },

    start: function() {
        this.fireEvent('beforeStart');
        this.remote('start');
    },

    _stop: function() {
        this.fireEvent('beforeStop');
        this.remote('stop');
    },

    remove: function() {
        this.fireEvent('beforeRemove');
        this.remote('remove');
    },

    fileStart: function(file) {
        this.remote('fileStart', file.id);
    },

    fileStop: function(file) {
        this.remote('fileStop', file.id);
    },

    fileRemove: function(file) {
        this.remote('fileRemove', file.id);
    },

    fileRequeue: function(file) {
        this.remote('fileRequeue', file.id);
    },

    appendCookieData: function() {
        var append = this.options.appendCookieData;
        if (!append) return;

        var hash = {};
        document.cookie.split(/;\s*/).each(function(cookie) {
            cookie = cookie.split('=');
            if (cookie.length == 2) {
                hash[decodeURIComponent(cookie[0])] = decodeURIComponent(cookie[1]);
            }
        });

        var data = this.options.data || {};
        if ($type(append) == 'string') data[append] = hash;
        else $extend(data, hash);

        this.setOptions({data: data});
    },

    processFiles: function(successraw, failraw, queue) {
        var cls = this.options.fileClass || Swiff.Uploader.File;

        var fail = [], success = [];

        if (successraw) {
            successraw.each(function(data) {
                var ret = new cls(this, data);
                if (!ret.validate()) {
                    ret.remove.delay(10, ret);
                    fail.push(ret);
                } else {
                    this.size += data.size;
                    this.fileList.push(ret);
                    success.push(ret);
                    ret.render();
                }
            }, this);
            this.fireEvent('selectSuccess', [success], 10);
        }

        if (failraw || fail.length) {
            fail.extend((failraw) ? failraw.map(function(data) {
                return new cls(this, data);
            }, this) : []).each(function(file) {
                file.invalidate().render();
            });

            this.fireEvent('selectFail', [fail], 10);
        }

        this.update(queue);

        if (this.options.instantStart && success.length) this.start();
    }

});

$extend(Swiff.Uploader, {

    STATUS_QUEUED: 0,
    STATUS_RUNNING: 1,
    STATUS_ERROR: 2,
    STATUS_COMPLETE: 3,
    STATUS_STOPPED: 4,

    log: function() {
    },

    unitLabels: {
        b: [{min: 1, unit: 'B'}, {min: 1024, unit: 'kB'}, {min: 1048576, unit: 'MB'}, {min: 1073741824, unit: 'GB'}],
        s: [{min: 1, unit: 's'}, {min: 60, unit: 'm'}, {min: 3600, unit: 'h'}, {min: 86400, unit: 'd'}]
    },

    formatUnit: function(base, type, join) {
        var labels = Swiff.Uploader.unitLabels[(type == 'bps') ? 'b' : type];
        var append = (type == 'bps') ? '/s' : '';
        var i, l = labels.length, value;

        if (base < 1) return '0 ' + labels[0].unit + append;

        if (type == 's') {
            var units = [];

            for (i = l - 1; i >= 0; i--) {
                value = Math.floor(base / labels[i].min);
                if (value) {
                    units.push(value + ' ' + labels[i].unit);
                    base -= value * labels[i].min;
                    if (!base) break;
                }
            }

            return (join === false) ? units : units.join(join || ', ');
        }

        for (i = l - 1; i >= 0; i--) {
            value = labels[i].min;
            if (base >= value) break;
        }

        return (base / value).toFixed(1) + ' ' + labels[i].unit + append;
    }

});

Swiff.Uploader.qualifyPath = (function() {

    var anchor;

    return function(path) {
        (anchor || (anchor = new Element('a'))).href = path;
        return anchor.href;
    };

})();

Swiff.Uploader.File = new Class({

    Implements: Events,

    initialize: function(base, data) {
        this.base = base;
        this.update(data);
    },

    update: function(data) {
        return $extend(this, data);
    },

    validate: function() {
        var options = this.base.options;

        if (options.fileListMax && this.base.fileList.length >= options.fileListMax) {
            this.validationError = 'fileListMax';
            return false;
        }

        if (options.fileListSizeMax && (this.base.size + this.size) > options.fileListSizeMax) {
            this.validationError = 'fileListSizeMax';
            return false;
        }

        return true;
    },

    invalidate: function() {
        this.invalid = true;
        this.base.fireEvent('fileInvalid', this, 10);
        return this.fireEvent('invalid', this, 10);
    },

    render: function() {
        return this;
    },

    setOptions: function(options) {
        if (options) {
            if (options.url) options.url = Swiff.Uploader.qualifyPath(options.url);
            this.base.remote('fileSetOptions', this.id, options);
            this.options = $merge(this.options, options);
        }
        return this;
    },

    start: function() {
        this.base.fileStart(this);
        return this;
    },

    _stop: function() {
        this.base.fileStop(this);
        return this;
    },

    remove: function() {
        this.base.fileRemove(this);
        return this;
    },

    requeue: function() {
        this.base.fileRequeue(this);
    }

});
